M K Chattopadhyay et al 2006 J. Phys. D: Appl. Phys. 39 1006 doi:10.1088/0022-3727/39/6/002
M K Chattopadhyay, M A Manekar and S B Roy
Show affiliationsThe magnetocaloric effect (MCE) is studied in CeFe2 and Ru-doped CeFe2 alloys with dc magnetization measurements. The pure CeFe2 compound shows a distinct peak in MCE around the paramagnetic to ferromagnetic transition. In Ru-doped CeFe2 alloys there is a further transition from the ferromagnetic to antiferromagnetic state at low temperatures. This latter magnetic transition gives rise to a relatively large inverse MCE. A comparative study of the MCE associated with two different magnetic transitions is made and the possible role of a structural transition in the inverse MCE is discussed.
75.30.Sg Magnetocaloric effect, magnetic cooling
75.30.Kz Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
65.40.G- Other thermodynamical quantities
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
Issue 6 (21 March 2006)
Received 10 November 2005, in final form 3 February 2006
Published 3 March 2006
M K Chattopadhyay et al 2006 J. Phys. D: Appl. Phys. 39 1006
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